Improvement in lifting-jacks



W. SAILER.

l LIFTING-JACKS;

N.184.,433. Patented Nov.14,187'e..

UNITED STATES PATENT OFFICE WILLIAM SAILER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO AUGUSTUS BEAN AND JACOB V. BEAN, OF SAME PLACE.

IMPROVEMENT IN LlFTlNG-JACKS.

Specification forming part of Letters'Patent No. 184,433, dated November 14, 1876; application fded October 25, 1 876. i

To all whom it may concern:

Beit known that I, WILLIAM SAILER, of Philadelphia, Pennsylvania, have invented an Improved Lifting-Jack, of which the following is a specication The object of my invention is to construct a cheap, strong, and compact lifting-jack, and this object I attain in the manner which I will now proceed-to describe, reference being had to the accompanying drawing, in which- Figures l and 2 are vertical sectional views ot' my improved jack, with the working parts in different positions; and Fig. 3 a sectional plan view of the same.

A represents a post or standard, tubular at the lower end, and so formed at the upper portion as to provide bearings for three shafts, 61,1), and c.v The shaft a carries a cog-wheel, d, the teeth. of which engage with a rack formed on the rear edge of 'a stem, B, which has a rib, c, at each side, adapted to agroove, c', in the corresponding side frame of the standard A, the front edge of the stem B bef'ing adapted to a grooved wheel, D, carried by the shaft b. The shaft A serves as a pivot for a lever, E, which is forked at its inner end a direction corresponding with the downward movement of the stern B. The upper end of the-stem B is provided with a flange, c', so as to form a step which is used in connection with low axles, the top of the stem itselfl heing used for high axles. By this means the jack can be caused to operate upon either high or low axles, as desired, Without any loss or movement in bringing the stem to bear on the axle. Lateral steadiness of thestem is insured, partly by the side ribs ec, and partly by the grooved wheel D, the side ribs e also serving to impart strengthto the stem.

rIhe above-described jack is compact in size, direct in operation, and, owing to the fewness -and simplicity ot' its parts, is economical in cost.

I claim as my invention- 1. The combination, in a lifting-jack, of the cog-'wheel d, with the toothed stem B, pivoted lever E, and its weighted pawl f, and hinged pawl g, adapted to thel said cog-wheel, substantially asset forth.

2. The combination of the standard A and and its grooves c', with the toothed stem B, and its rib c, the cog-wheel d, and the grooved roller D.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. v

WILLiAM SAILER. Witnesses:

HERMANN MoEssNER, HARRY SMITH. 

